science chapter 8

which of the following statements is not correct

Symbiosis is a relationship in which two organisms live apart.

each of the following is an example of a parasite except

a cow in a pasture

an example of population is...

all maple trees in a forest

which of the following statemnets is correct

an organisms habitat is a location

which of the following organisms has the highest reproductive potential

bacteria

thick fur on deer is NOT an example of coevolution. why?

because thick fur evolved in response to a cold climate, not in response to other organisms

competition for food cannot occur

between animals from two different ecosystems

a population's growth rate is its _____ rate minus its ______ rates

birth;death

The ________ of an ecosystem for a particular species is the maximum population that the ecosystem can support indefinitely.

carrying capacity

over a long period of time two special can develop adaptations that increase the benefit of their relationship is the process of _______

coevolution

in which of the following relationships is neither species harmed

commensalism

a robin that does not affect the tree in which it nests is an exmaple of

commenselism

a type of interaction between two species in which both species are harmed is ______

competition

Deaths that are caused by a disease spreading through a population are ___ dependent

denisty

The number of wild horses per square kilometer in a prairie is the horse populations

density

a population's _______ is the number of its members per unit area or per volume

density

a populations ____ is usually described as even, clumped, or random

dispersion

If a pair of mice finds a place to live with plenty of food and no predators, the population of mice will probably undergo ____________________ growth.

experantial

the average age at which memebers of a species reproduce in that species _______

genection time

if two species use the same food source at diffrent times, they are _____ compeitiors

indirect

unlike a predator in relation to its prey, a parasite does not usually ________ its host

kill and eat

The amount of food available for wolves in an area determines the ecosystem's carrying capacity for wolves and is a ____ resource for wolves

limiting

a true statement about paratism is that parasites

may cause their hosts to become more vunerable to predators

The organisms in a cow's stomach have a constant source of food; the organisms help the cow break down and use the grass it eats. This type of relationship is an example of ____________________.

mutalism

the relationship between aeaeia trees and the ants that live on them is an example of

mutualism

a populatio n has a _________ growth rate when the death rate is higher than the brith rate

negative

A species' _______ includes that species' physical home, the environmental factors necessary for that species' survival, and all its interactions with other organisms.

niche

a liver fluke is an ______ that harms its host as it obtains food

parasite

a ________ usually only weakens its host, while a ______- usualluy kills its prey

parasite;predator

the relationship between a canadian lynx and a snowshoe hare is an example of

predator and prey

the type of interaction between cats and mice is

predator- prey

which of the following is NOT an example of exponential growth

reindeer of the pribilof islands after eating most of the lichens

If over a long period of time, each pair of adults in a population had only two offspring and the offspring lived to reproduce, the population would

remain the same

the maximum number of offspring that each member of a population can produce in the population's ______

reprodcutive potential

which of the following has a greater effect on reproductive potential

reproducing earlier in life

niche ________ is when each speciesd uses less of the niche than it is capable of using, in order to reduce compeition for resources with other species

restriction

the three main properties used to describe a population are

size, density, and dispusion

which of the following populations has a random dispersion

solitary snakes in a desert

the carrying capacity of an enviorment for a particular species at a particualar time is determined by the

supply of the most limited resources

a relationship in which two organisms live in close association sych as mutalsim and commensalism is called _____

symbiosis

members of a species compete indirecty for resources by competing for an ________ and for social dominance

territory

which of the following reproductive situations will limit a population's biotic potential

the maximum number of offspring each individual can produce

a female dog's niche includes all of the following except

the neighbor's enclosed yard

the density of a population is

the number of individuals per unit area

which of the following statements explains why the growth of orchids on the high branches of tropical trees is an example of commensalism

the trees are neither benefited nor harmed

the diffrence between a predator and a parasite is that a predator

usually kills and eats its prey

which of the following would most likely cause a large number of density-independent deaths in a population

winter storms

A species of plant has exponential growth after it is introduced into an area where it has never lived. Which statement best describes exponential growth?

within a few years the population increases dramatically